Date: Fri, 11 Oct 1996 06:41:32 -0700 (PDT) From: chou@mpd.tandem.com To: freebsd-gnats-submit@freebsd.org Subject: bin/1773: A NULL pointer causing segmentation core dumped. Message-ID: <199610111341.GAA15852@freefall.freebsd.org> Resent-Message-ID: <199610111350.GAA16194@freefall.freebsd.org>
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>Number: 1773 >Category: bin >Synopsis: A NULL pointer causing segmentation core dumped. >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Oct 11 06:50:01 PDT 1996 >Last-Modified: >Originator: Gary Chou >Organization: Tandem Computers Inc >Release: 2.1.5 >Environment: FreeBSD osipc.isd.tandem.com 2.1.5-RELEASE FreeBSD 2.1.5-RELEASE #0: Wed Jul 17 03:09:31 1996 jkh@whisker.cdrom.com:/usr/src/sys/compile/GENERIC i386 >Description: Line 1065 in function default_server_hostnames(), the gethostbyname() will return NULL if the "ServerName" has incorrect value in the httpd.conf. Line 1071 will core dumped dur to the NULL pointer of "main". >How-To-Repeat: Give a non-existing domain name of ServerName in httpd.conf. >Fix: Add checking against NULL after "gethostbyname()" as following suggested code: if (!main) { fprintf(stderr, "httpd: Host name(%s) lookup failure.\n", def_hostname); exit(1); } >Audit-Trail: >Unformatted:
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